Home / 149,199.51-205,904.66-82,131.51

Finding the Fourth Proportional to 149,199.51, 205,904.66 and 82,131.51

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Solution

The fourth proportional to 149,199.51, 205,904.66 and 82,131.51 is: 113,346.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,199.51 : 205,904.66 = 82,131.51 : x
  2. Step 2: Convert to fraction form
    149,199.51/205,904.66 = 82,131.51/x
  3. Step 3: Cross multiply
    149,199.51x = 205,904.66 × 82,131.51
  4. Step 4: Simplify right side
    149,199.51x = 16,911,260,231.18
  5. Step 5: Solve for x
    x = 16,911,260,231.18/149,199.51
  6. Step 6: Final answer
    x = 113,346.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.